Operating Segments (Reconciliation Of Reportable Segments Measure Of Profit Or Loss To Income) (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Mar. 31, 2020	Mar. 31, 2019		Mar. 31, 2020	Mar. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		$ (14,212)	$ (23,776)	[1]	$ (31,068)	$ (82,576)	[1]
Change in fair value of equity securities		0	(26,263)		0	(42,099)
Gain on disposal of FIHRST		0	0	[1]	(9,743)	0	[1]
Interest income		570	1,204	[1]	2,015	4,436	[1]
Interest expense		(1,886)	(3,092)	[1]	(6,362)	(8,201)	[1]
Impairment of Cedar Cellular Note		0	(2,622)	[1]	0	(5,354)	[1]
Income (Loss) before income taxes		(15,528)	(54,549)	[1]	(25,672)	(133,794)	[1]
Continuing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income	[2]	(14,212)	(23,776)		(31,068)	(82,576)
Discontinued [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income	[2]	1,516	2,093		8,784	18,714
Reportable Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		(10,010)	(7,818)		(9,152)	(31,678)
Reportable Segment [Member] | Continuing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		(12,763)	(19,804)		(23,720)	(70,474)
Reportable Segment [Member] | Discontinued [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		(2,753)	(11,986)		(14,568)	(38,796)
Corporate/Eliminations [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		(2,686)	(13,865)		(13,132)	(32,184)
Corporate/Eliminations [Member] | Continuing [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		(1,449)	(3,972)		(7,348)	(12,102)
Corporate/Eliminations [Member] | Discontinued [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating (loss) income		$ (1,237)	$ (9,893)		$ (5,784)	$ (20,082)

[1] Refer to Note 1

[2] South African transaction processing and Financial inclusion and applies technologies include retrenchment costs for the three months ended March 31, 2019 of: $2,972 (nine months: $3,673) and $1,570 (nine months: $1,570), respectively, for total retrenchment costs for the three months of $4,542 (nine months: $5,243). The retrenchment costs are included in selling, general and administration expense on the unaudited condensed consolidated statement of operations for the three and nine months ended March 31, 2019.